Dynamic nuclear polarization with a rigid biradical.

ABSTRACT: A new polarizing agent with superior performance in dynamic nuclear polarization experiments is introduced, and utilizes two TEMPO (2,2,6,6-tetramethylpiperidine-1-oxyl) moieties connected through a rigid spiro tether (see structure). The observed NMR signal intensities were enhanced by a factor of 1.4 compared to those of TOTAPOL, a previously described TEMPO-based biradical with a flexible tether.

SUBMITTER: Matsuki Y 

PROVIDER: S-EPMC2980755 | biostudies-literature | 2009

REPOSITORIES: biostudies-literature